421443933 has 4 divisors (see below), whose sum is σ = 561925248. Its totient is φ = 280962620.

The previous prime is 421443901. The next prime is 421443941. The reversal of 421443933 is 339344124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421443933 - 2⁵ = 421443901 is a prime.

It is a super-2 number, since 2×421443933² = 355229977325016978, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421443894 and 421443903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421443733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70240653 + ... + 70240658.

It is an arithmetic number, because the mean of its divisors is an integer number (140481312).

Almost surely, 2^421443933 is an apocalyptic number.

It is an amenable number.

421443933 is a deficient number, since it is larger than the sum of its proper divisors (140481315).

421443933 is a wasteful number, since it uses less digits than its factorization.

421443933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140481314.

The product of its digits is 31104, while the sum is 33.

The square root of 421443933 is about 20529.0996636482. The cubic root of 421443933 is about 749.7444658352.

The spelling of 421443933 in words is "four hundred twenty-one million, four hundred forty-three thousand, nine hundred thirty-three".